Game freezes when AI attacks neutrals :/

Well, my first attempt at my new "World at War" map, (engine 1.9.0.0.73, Map 2.1.1) doesn't get very far when it freezes up every time Germany - played by AI hard - attacks Neutral Hungary in the very first round. I think they kill two infantry, and then everything stops! ! It looks like this: 0_1528579773217_Screenshot (7).png

As you can see, no "space to continue" button. I've shut down and reloaded several times, and it always stops at this point.